Improvement in grain-binders



4 Sheets-Sheet 1.

W. R. BAKER 8v C. B.WITHINGTON.

@fram-Binder.I

No. 2OI,|49. Patented March 12,1878.

4 SheetS-Shet 2.

`W. R. BAKER 8u C. B. WITHINGTON.

Grain-Binder.

No. 20l,l49. APaten'cedMarch 12,1878.

ax @i g k *g NJUERS, PHOTO-UTHOGRAFHER. WASHINGTON. DC.

' 4 Sheets-Sheet 3. W. R. BAKER 8u C. B. WITHINGTON.

ILPTERS, PMDTULIYHOGRAPHER, WASHINGTON. Dv

4 Sleets-Sheet 4. W. R. BAKER 8c C. B. WITH'INGTON.

Grain-Binder.

No. 29j-,|49 Patented March 1 2, 1878.

UNITED STATES PATEnfLQFHETFQn.

WILLIAM R. BAKER, OF CHICAGO, ILLINOIS, AND CHARLES B. WITHINGTON, I

OF JANESVILLE, WISCONSIN, ASSIGNORS TO C. H. AND L. J. MOCORMICK,

OF CHICAGO, ILLINOIS.

IMPROVEMENT- IN GRAIN-BINDERS.

Specification forming part oi; Letters Patent No. 201,149, dated March12, 1878; application filed December 21, 1877.

To all whom fit may concern:

. Be it known that we,'W1LLIAM B. BAKER, of Chicago, in the county ofCook and State of Illinois, and CHARLES B. WITHINGTON, of Janesville, inthe county of Rock and State of Wisconsin, have invented certain new anduseful Improvements in Grain Binders, of which the following is aspecification:

Our invention relates to and constitutes an improvement upon thewell-known McCormick binder,77 more especially as exempliiied in LettersPatent No. 191,096, granted May 22, 187 7, to Wm. B. Baker, and in theapplication for Letters Patent by Lambert Erpelding, of Chicago,aforesaid, assignor to C. H. and L. J. McCormick, iled January 27, 1877.

The object of the first part of our invention is to automatically lockand unlock the reciprocating binding-carriage at each end of its stroke,and simultaneously to hold and release the binder-arm'in order to lockit in its uplifted position when moving forward to grasp a bundle, andto release it at the proper time to enable it to effect that operation,which ends we obtain by combining with an intermittingly-rotating crank,actuated by a driving-chain, a locking-stop, which simultaneously locksthe binding-carriage and engages with a stop on the crank whichactuatesthe binder-arm.

`The object of the next part of our invention is to preventv derangementof the twisting mechanism by the stretching or wearing of the driving-chain, which irregularities We compensate by mounting the lug uponwhich the pawl ofthe gear-wheel which drives the differential gear,twister, and cutter acts upon a movable plate, pivoted concentricallyupon the diii'erential wheel, and providing it with adjusting mechanism,so that the teeth of the diierential wheel can be adjusted to compenlsate variations inthe length oi' the drivingchain. Y

The next part of our invention relates to that part of the mechanismwhich gives the half-revolution to the twister 011 the forward movementof the binding-head. Itsobject is to prevent breakage or derangement oi'the mechanism should the operator, inoiling the twister-gearing,carelessly leave the pin which locks the differential gear in a linebetween the stud or push-bar which actuates said pin and the hub of the.differential gear-wheel, which liability we obviate by pivoting the studor push-bar so as to allow it slight lateral play, and provide it with aspring which normally retains it in its proper position, but yields whenit encounters a rigid obstacle.

In the accompanying drawings, which represent so much of a McCormickbinder with our improvements applied thereto as is necessary toillustrate the subject-matter herein claimed, Figure l represents a planor top -view 5 -'Fig. 2, a rear elevation thereof, showing the parts inthe position they. occupy at the moment the binder-arm begins to moveforward in its uplifted position. Fig. 3 repre.

sents a similar view of the opposite side ofthe same, partly in section,on the line l 1 of Fig. l. Fig. 4 represents a plan or top view of thedierential gear, the crank, the locking-stop, and traversing-carriage,on the line 2 2 of Fig. 5, with parts broken away to show the internalconstruction more clearly. Fig. 5 represents a view,in elevation, of theparts shown in Fig. 4, partly in section, on the line 3 3 of saidiigure. Fig. 6 represents a vertical diagonal section through thedifferential gear on the line 4 4 of Fig. 4. Fig. 7 represents a view,in elevation, of the devices for tightening the driving-chain; and Fig.8, a vertical transverse section therethrough on the line 5 5 of Fig. 7.

It is deemed unnecessary to describe in detail the construction of thebinder, as it is fully exemplified in patents heretofore vgranted toourselves and Erpelding jointly and severally.

Arepresents the binder-frame, provided with -ways a al, upon which thebinding-carriage B reciprocates, with a rack, c2, for actuating thetwisting mechanism. The binding-carriage is reciprocated by means of adriving-chain, C, running over sprocket-wheels D D', and driven in usualwell-known ways. The chain is tightened to compensate wear by means ofan adjusting-screw, d, Fig. 7, whieheontrols the Y Y movable bearinginwhich' one of the sprocket- 'wheelsis mounted. Y YY 'from runnin g faster than the chain, or, in otherV words, to prevent the slotted crankfrom over- Y running its driving-pin, which is apt to be the case whenthe traversing-carriageis Y inclined, we mount a locking-latch, F, upona pivot, f,

intermediate Vof its; length, upon. Y theV slotted.: Y

arm E of the 'intermittingly-rotating, `:crank The outer end of thislatch moves vertically in Ya guide-hangar, on the slotted arm,

and is provided with a stop, f1, tolimit its descent., WhenV in itslowest position its end i abats againsttheidnvaapm anutoidsaat;

the extremity of the slotted arm, thus locking the driving-pin andcarriage together. A

spring, f2, bearing onthe oppositeendofV the Y Y latch, tends to holdthe parts in their locked pnsitinn.V This latter end of theYlatch isalso provided with a toe, which alternatelyienters notches g g', in adisk, G, connected with a Y Y pit-man,Gwhiehactuates the rock-shaftl,

which carries the binder-arm and compresserY Y i throughrthe Vmedium ofVa crank, h, as is Well understood.V

The binder-arm is locked in its elevated posi- Y Y tion andautomatieallyreleased at the proper ytime simultaneouslywith the releaseYof the driving-pin by the rotation of the elbow-crank YEIE., whichtakesV place Vas the driving-pin passes around its sprocket-wheel.

The carriage is held stationary at each end of its stroke while thebinder-arm is closing around the bundle, and in opening, by pins o and ahalf-shell, rO, on the elbow-crank, as described in Bakers patent, abovementioned.

The dierential gear-wheel K, which drives the cutters and twistingmechanism, is, in its general construction, similar to that shown anddescribed in the application of Erpelding, above mentioned. It is,however, for convenience of construction, made in two sections or disks,bolted together. Experience has demonstrated that, as the relation ofthe teeth of the twister-pinion to the mouth of the cutter-head isdependent upon the relation of the stationary rack to the differentialgear, and as this relation in turn is dependent upon the length of thedriving-chain, the wearing or stretching of the driving chain sometimesthrows the teeth of the sectional twister or cutter into improperrelation.

We obviate this objection by mounting the lug l, upon which the pawl mof the drivinggear M acts to move the differential gearing, andconsequently the twister-pinions, upon a plate, L, mountedconoentrically upon the axis of the differential wheel, and capable of aslight turning movement thereon. A stud, u,

Y-(See Figs. V1 and 3.)V j

tion, when the stud p strikesthepush-bar SY Yi Y Yon this plate extendsup througha slotintbe i YY differential gear, and is providedfwith asetf Y screw, nl, abutting against alug, o', on the gear, to adjust the;relationV VofV theV lug with Y Y Y its drivin g-pawl. t clamp-nut, n2,on the stud a serves to lock the parts securely in position whenVadjusted.

ithsmodeof construction Vwe are enabled, when the chain becomes wormtoshorten Y Y Y Y it by taking out a link, and still to preserve theproper relation of the teeth of the cutterpinion. The organization ofthis machine is such that, as Vthe twisting mechanism moves for-Y Y.ward to carry the wire aroundthe bundle, aY

half-turn isgiven to the twister-pinion to carry the first -WireY thatenters the i jaws of the Y twister around to its back, so as to .beopposite the second wire which enters. l This dilferential gear Kabuttingagainst the stud :orYpush-bariS on a xed portion ofthe frame. Inthe Erpeldingiapplieation al'iov'ernen-V tioned, this stud is rigid.Consequently, if Y Y the operator should carelessly leave the stud Y pinp out of gear with the-latch,.or in a line Y between the hub of' thediiferential gear and the; stud sYfit might break the machine.Y To Yobviate this difficulty we pivot the push-barV S upon a pivot, s, so asto allow it a slightlateral orY horizontal play, and maintain: Vit Y Yin its normal position by a spiral spring, s.

Under this construcsquarely, and is in proper position, the dif- Yferential wheel K is rotated; but when the pin is out of ,position itstrikes upon the sloping side of the push-bar, which yields laterally,and thus prevents injury to the diierential gear. p

The operation of our improvements will readily be understood from theforegoing description.

What we claim as our own invention, and desire to secure by LettersPatent, is-

1. The combination, substantially as hereinbefore set forth, of thereciprocating binding-carriage, the slotted intermittingly-rotatingcrank mounted thereon, the traversing driving-chain carrying a pinworking in a slot of the crank-arm, the locking-latch pivoted upon thecrank-arm, and simultaneously aetin g upon the pin of the driving-chain,and the pitman which actuates the binding arm, whereby thebinding-carriage and binding-arm are automatically locked in positionand released at the proper moment by a single instrumentality.

2. The combination,- substantially as hereinbefore set forth, of the lugon the turningplate, and mechanism for securing said plate whenladjusted, mounted upon the diiierential gear, whereby the properrelation of the parts of the twister is preserved, notwith- YYoperationis caused bya studpin`,Yp,onYtheYY standing variations in thelength of the driv-Y In testimony whereof We have hereunto subingchain.scribed. our names.

3. The combination substantially es here- VWM inbefore set forth, of thereciprocating inter- CH'BBAXIIINGTON mittingly-rotatng die-rentiai gearactuating the twister, and the laterally-yielding push- Witnesses:

bar, whereby breakage of the twister-gearing JOHN V. A. HAsBRooK, isprevented. WM. J. PnYToN.

j., L s

